A Distracted Driving Tale--and a Question

From Cheryl Cohen

Dear Tom and Ray,

I've seen a lot of distracted drivers in my day. I thought that I had seen the worst when I had my car rear ended by someone drinking coffee and talking on a cell phone. But this one tops it. Stopped at a light, I dared to glance through my rear-view mirror. A woman in a minivan was vigorously brushing her teeth. When the light changed, she opened her car door and spat. When I spotted her again we were in motion, and she was still brushing, rolling down her window, and spitting. Wow. The next time I looked, she was gargling. Then she began eating her breakfast.

My question: Why didn't she brush after she ate?